WO2022223435A1 - Mélangeur-extrudeur - Google Patents

Mélangeur-extrudeur Download PDF

Info

Publication number
WO2022223435A1
WO2022223435A1 PCT/EP2022/060044 EP2022060044W WO2022223435A1 WO 2022223435 A1 WO2022223435 A1 WO 2022223435A1 EP 2022060044 W EP2022060044 W EP 2022060044W WO 2022223435 A1 WO2022223435 A1 WO 2022223435A1
Authority
WO
WIPO (PCT)
Prior art keywords
extruder
rotor
stator
screw
mixer
Prior art date
Application number
PCT/EP2022/060044
Other languages
German (de)
English (en)
Inventor
Friedel Dickmeiss
Wolfgang Imping
Nils Stary
Ludger Reichling
Original Assignee
Bb Engineering Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bb Engineering Gmbh filed Critical Bb Engineering Gmbh
Priority to US18/556,032 priority Critical patent/US20240208130A1/en
Priority to EP22723070.3A priority patent/EP4326522A1/fr
Priority to CN202280029458.2A priority patent/CN117177857A/zh
Priority to DE102022119630.5A priority patent/DE102022119630A1/de
Publication of WO2022223435A1 publication Critical patent/WO2022223435A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/361—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die with the barrel or with a part thereof rotating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/405—Mixing heads
    • B29B7/408—Mixing heads with mixing elements on a rotor co-operating with mixing elements, perpendicular to the axis of the rotor, fixed on a stator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/425—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw surrounded by a casing provided with grooves or cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/67—Screws having incorporated mixing devices not provided for in groups B29C48/52 - B29C48/66

Definitions

  • Extruder mixers of the type mentioned at the outset are basically known from the prior art and are typically used for mixing viscous and partially filled fluids, as well as molten polymers.
  • a device for mixing plasticizable synthetic resins is disclosed in the utility model DE 7433808 U terschrift.
  • An extruder mixer is a device specially designed for use in an extruder, which is used to mix the material to be extruded. Not every device that is suitable for mixing a fluid can therefore be regarded as an extruder mixer.
  • the extruder mixer has a rotor and a stator.
  • the rotor can be rotated relative to the stator.
  • the stator is not rotatable to the extent that the stator at normal use of the extruder mixer cannot be rotated. This can be the case, for example, because the stator is permanently mounted. No further element is preferably arranged between the rotor and the stator.
  • the rotor has a plurality of openings.
  • the breakthrough or breakthroughs can each be provided as a bore or slot.
  • the openings in the rotor are arranged in several rows of openings. It has proven to be advantageous if the rows of openings each extend in the longitudinal direction (axial direction) of the rotor, in particular parallel to an axis of rotation of the rotor. In a further particularly preferred embodiment, the rows of openings are arranged on the rotor along a circumference of the rotor at equal distances from one another. It has proven to be advantageous if the openings are elongated in a longitudinal direction and their longitudinal direction runs parallel to a rotational axis of the rotor. Alternatively, the longitudinal direction of the openings can be skewed relative to the axis of rotation of the rotor.
  • longitudinal section of the stator on which the plurality of recesses involved in the mixing process is formed is predominantly, preferably at least 50 percent, more preferably at least 80 percent, within the rotor and/or rotor basket is arranged.
  • an opening in the rotor is positioned offset in the middle in relation to a corresponding recess in the stator.
  • a central offset can relate to the circumferential direction and/or to the longitudinal direction of the stator.
  • the number and size of the recesses in the stator and the number and size of the openings in the rotor, as well as the axial positioning of the rotor and stator relative to one another, result in a variation in the mixing effect (by changing the overlap of inlet/outlet covers).
  • the mixing performance of the extruder mixer can therefore be significantly influenced by replacing the stator, for example.
  • the openings in the rotor and/or the recesses in the stator extend parallel to the axis of rotation of the rotor, in each case in relation to their longitudinal direction.
  • the screw drive is rotatably coupled to the rotor of the extruder mixer.
  • a rotation of the screw drive preferably results in a rotation of the rotor of the extruder mixer.
  • the rotor drive is connected to the rotor of the extruder. dermischers is rotationally coupled. It has proven to be advantageous if the worm drive is arranged on the side of the worm housing. Alternatively, the screw drive can be arranged on the side of the rotor of the extruder mixer.
  • FIG. 1 shows a first preferred exemplary embodiment of an extruder according to the invention
  • FIG. 6 shows a preferred exemplary embodiment of a rotor basket
  • FIG. 7 shows a preferred embodiment of a stator
  • FIG. 8 shows an assembly of the rotor cage of FIG. 6 with the stator of FIG. 7.
  • FIG. 10 A first preferred embodiment of an extruder mixer 10 according to the invention is shown in FIG.
  • the extruder mixer 10 is equipped with a stator 1 and a rotor 3 arranged coaxially to the stator 1 .
  • the rotor 3 is rotatably mounted relative to the stator 3 .
  • the rotor 3 rotates about the axis of rotation R.
  • the stator 1 has a plurality of recesses 5 and the rotor 3 has a plurality of breakthroughs 7 on. At least one recess 5 overlaps with at least one opening 7.
  • the stator 1 is arranged at least in sections within a volume RV spanned by the rotor 3 .
  • a stator shaft 6 of the stator 3 is predominantly located within a rotor basket 4 of the rotor 3 in relation to the axial direction AR.
  • a stator shaft 6 is to be understood in particular as that region of the stator 3 on which the plurality of recesses 5 are formed.
  • the stator 3 encompasses the stator shaft 6 and a stator head 8 formed in one piece with the stator 6.
  • a rotor cage 4 is intended to mean in particular that region of the rotor 3 on which the plurality of openings 7 is formed.
  • the stator 1 also has an axial bore 2 (compare also FIG. 2), via which a fluid can be introduced into the rotor 3.
  • FIG. 1 A first preferred exemplary embodiment of an extruder 100 according to the invention is shown in FIG.
  • the extruder 100 has an extruder mixer 10 according to the exemplary embodiment in FIG. 1 .
  • the extruder 100 is equipped with an extruder screw 30 mounted in a screw housing 20 of the extruder 100.
  • the extruder screw 30 is coupled to a screw drive 40 of the extruder 100, so that the extruder screw 30 rotates about the axis of rotation R can be rotated.
  • the worm drive 40 is on one of the extruder head 50 facing away from the screw housing 20 net angeord.
  • the extruder 100 has an extruder head 50 , the screw housing 30 being flanged to the extruder head 50 .
  • the stator head 8 of the stator 1 of the extruder mixer 10 is screwed to the extruder head 50 and is thus arranged in a rotationally fixed manner bezüg Lich of the extruder head 50 .
  • the term extruder head includes the term that this component with the functions described is positioned at the head end of an extruder and preferably accommodates measuring devices for the physical description of the extruded fluids/polymer (e.g. pressure and temperature sensors).
  • the worm drive 40 is for its part rotatably coupled to the rotor 3 of the extruder mixer 10 so that the rotor 3 can be rotated along the axis of rotation R.
  • the extruder screw 30 is rotatably coupled to the rotor 3 of the extruder mixer 10 so that the screw drive 40 drives both the extruder screw 30 and the rotor 3 in rotation.
  • Fig. 2 Clearly visible in Fig. 2 is the axial bore 2, the axis coaxial to the rotation R within the stator 1 extends.
  • a fluid for example a color component, can be introduced into the rotor 3 via the axial bore 2 .
  • the extruder head 50 centrally accommodates a one-piece or multi-piece stator 1 .
  • This stator 1 integrates the functions of a stationary stator head 8, the axial bore 2 (or possibly also a plurality of bores) for connecting and feeding the components to be mixed into the mixing chamber formed by the rotor 3.
  • the stator shaft 6 of the bore(s) designed as the outlet area mechanical or hydraulically controlled built-in components can be provided for the temporary closure and/or throttling of the fluid supplied.
  • the fluid stream emerging from the axia len bore 2 is pressed into the central centric mixer cavity positioned at the head end and from there distributed evenly radially over the circumference and the first openings 4 .
  • FIG. 2 A second preferred embodiment of an extruder 200 according to the invention is shown in FIG.
  • the extruder 200 has an extruder mixer 10 according to the embodiment of FIG.
  • the extruder 200 is equipped with an extruder screw 30 mounted in a screw housing 20 of the extruder 200.
  • the extruder screw 30 is coupled to a screw drive 40 of the extruder 200, so that the extruder screw 30 can be rotated about the axis of rotation R.
  • the extruder 200 of FIG. 3 has the separate or extended screw housing 21, with the extruder screw 31 and the additional screw drive 41 - which can together be referred to as the feed unit - on a side facing away from the rotor 3 within the Stator head 8 arranged.
  • a mechanical or hydraulic functional unit X is positioned on the rotating extruder screw 31, or a throttling effect and/or a reduction in the axial position of the rotating extruder screw 31 is achieved by appropriate shaping of the outlet area. Termination of exit possible.
  • the temperature of the cylinders 20 and 21 can be done both by liquid media and contact and convection heating (and combinati ons). The intended operation allows the left- asright-turning rotation of the connected screw 21 in the central filler piece 8, which to which the described cavities (stator cavities) 5, which are arranged correspondingly with the openings of the rotor 7 (rotor openings).
  • the mechanically or hydraulically operating functional unit X positioned in the exit area of the stator shaft 6 can alternatively be coupled to the worm drive 40 (or rotor drive 60).
  • the special characteristics of the functional unit X are as a throttle unit X1, blocking unit X2 or volume pump X3.
  • FIG. 3 A third preferred exemplary embodiment of an extruder 300 according to the invention is shown in FIG.
  • the extruder 300 has an extruder mixer 10 according to the exemplary embodiment in FIG. 1 .
  • the extruder 300 of FIG. 4 has the screw housing 20, the extruder screw 30 and the screw drive 40--which together can be referred to as the feed unit--on the side of the stator head 8 facing away from the rotor 3.
  • Fig. 2 shows the minimum In the case of polymer preparation via a screw V0 and the pressure feed of the second volume flow V1 into the extruder mixer 10. An outlet hole releases the mixture as a volume flow VM from the extruder mixer 10.
  • the number of pressure feeds for further volume flows VX is not limited.
  • FIG. 3 shows the intended operation through the supply of two volume flows V0, V1 via the separately driven screws/rotors and the pressure feeding of a third volume flow V2 into the extruder mixer 10.
  • An outlet hole releases the mixture as a volume flow VM from the Extruder mixer 10.
  • the number of pressure feeds for further volume flows VX is not limited.
  • FIG. 4 A fourth preferred embodiment of an extruder 200 according to the invention is shown in FIG.
  • the embodiment of FIG. 4 is structurally similar to the embodiment of FIG. 2 with the difference that in normal operation of the extruder 200 of FIG.
  • the volume flows are supplied in normal operation by supplying the volume flows V1, V2 and VX into the extruder head 50, i.e. perpendicular to the axis of rotation R of the rotor 3.
  • the volume flow VM volume flow "mixing" occurs in the intended operation through the axial bore 2 out of the stator 1.
  • FIG. 6 shows a preferred exemplary embodiment of the rotor 3, which has a rotor basket 4 with a large number of openings 7.
  • FIG. 7 In contrast to the execution 1 to 5 in which the openings 7 are longitudinally formed in a longitudinal direction and their longitudinal direction runs parallel to an axis of rotation R of the rotor 3, the openings 7 do not run parallel to the axis of rotation R of the rotor 3 in their longitudinal direction L7 .
  • FIG. 7 shows a preferred exemplary embodiment of a stator 1 which has a large number of recesses 5 .
  • FIG. 7 shows a preferred exemplary embodiment of a stator 1 which has a large number of recesses 5 .
  • the recesses are elongate in a longitudinal direction and their longitudinal direction runs parallel to a rotational axis R of the rotor 3, the recesses 5 do not extend in their longitudinal direction L5 parallel to the rotational axis R of the rotor 3 (not shown here).
  • FIG. 8 shows an extruder mixer as an assembly of the rotor 3 of FIG. 6 with the stator 1 of FIG. 7. As can be seen from FIG 5. This can have a positive influence on the mixing behavior of the extruder mixer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un mélangeur-extrudeur (10) ayant un stator (1) et un rotor (3) disposé de manière coaxiale par rapport au stator (1), le rotor (3) étant monté rotatif par rapport au stator (1), et au moins certaines parties du stator (1) étant disposées à l'intérieur d'un volume (RV) délimité par le rotor (2).
PCT/EP2022/060044 2021-04-20 2022-04-14 Mélangeur-extrudeur WO2022223435A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US18/556,032 US20240208130A1 (en) 2021-04-20 2022-04-14 Extruder-mixer
EP22723070.3A EP4326522A1 (fr) 2021-04-20 2022-04-14 Mélangeur-extrudeur
CN202280029458.2A CN117177857A (zh) 2021-04-20 2022-04-14 挤出机混合器
DE102022119630.5A DE102022119630A1 (de) 2021-04-20 2022-08-04 Extrudermischer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021002064.2 2021-04-20
DE102021002064.2A DE102021002064A1 (de) 2021-04-20 2021-04-20 Extrudermischer

Publications (1)

Publication Number Publication Date
WO2022223435A1 true WO2022223435A1 (fr) 2022-10-27

Family

ID=81648058

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/060044 WO2022223435A1 (fr) 2021-04-20 2022-04-14 Mélangeur-extrudeur

Country Status (5)

Country Link
US (1) US20240208130A1 (fr)
EP (1) EP4326522A1 (fr)
CN (1) CN117177857A (fr)
DE (2) DE102021002064A1 (fr)
WO (1) WO2022223435A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7433808U (de) 1975-02-13 Barmag Barmer Maschinenfabrik Ag Mischeinrichtung
EP0048590B1 (fr) 1980-09-23 1983-12-07 Rapra Technology Limited Mélangeur de boudineuse
JPS6223725A (ja) * 1985-07-24 1987-01-31 Sekisui Plastics Co Ltd 熱可塑性樹脂発泡体の製造装置
EP0492297A1 (fr) * 1990-12-20 1992-07-01 Paul Troester Maschinenfabrik Tête d'extrusion pour le revêtement d'articles allongées
WO2007003713A1 (fr) * 2005-07-04 2007-01-11 Maillefer S.A. Procédé d’extrusion et dispositif d’extrusion
DE102007022287A1 (de) 2007-05-12 2008-11-13 Cincinnati Extrusion Gmbh Extrudermischer
WO2010089320A1 (fr) * 2009-02-09 2010-08-12 Unilever Plc Appareil de mélange de dispersion et de répartition du type cddm et son utilisation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290702A (en) 1979-12-17 1981-09-22 Scientific Process & Research, Inc. Plasticating apparatus for molding devices
DE3301043C2 (de) 1982-02-09 1986-10-23 Akzo Gmbh, 5600 Wuppertal Mischvorrichtung
NL8801156A (nl) 1988-05-03 1989-12-01 Univ Twente Menginrichting met distributiemengwerking, voor een extruder, een spuitgietmachine en dergelijke.
DE9412749U1 (de) 1994-08-06 1994-10-06 Krauss-Maffei AG, 80997 München Vorrichtung zum Herstellen marmorierter Kunststoff-Formteile
DE19715125A1 (de) 1996-05-03 1997-11-06 Barmag Barmer Maschf Mischvorrichtung, insbesondere zum Mischen von Kunststoffschmelzen und Additiven
US5988866A (en) 1998-05-22 1999-11-23 Barr; Robert A. Floating sleeve mixer and method
TW470789B (en) 1998-08-29 2002-01-01 Barmag Barmer Maschf Apparatus for mixing and advancing a polymer melt

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7433808U (de) 1975-02-13 Barmag Barmer Maschinenfabrik Ag Mischeinrichtung
EP0048590B1 (fr) 1980-09-23 1983-12-07 Rapra Technology Limited Mélangeur de boudineuse
JPS6223725A (ja) * 1985-07-24 1987-01-31 Sekisui Plastics Co Ltd 熱可塑性樹脂発泡体の製造装置
EP0492297A1 (fr) * 1990-12-20 1992-07-01 Paul Troester Maschinenfabrik Tête d'extrusion pour le revêtement d'articles allongées
WO2007003713A1 (fr) * 2005-07-04 2007-01-11 Maillefer S.A. Procédé d’extrusion et dispositif d’extrusion
DE102007022287A1 (de) 2007-05-12 2008-11-13 Cincinnati Extrusion Gmbh Extrudermischer
WO2010089320A1 (fr) * 2009-02-09 2010-08-12 Unilever Plc Appareil de mélange de dispersion et de répartition du type cddm et son utilisation

Also Published As

Publication number Publication date
EP4326522A1 (fr) 2024-02-28
DE102021002064A1 (de) 2022-10-20
DE102022119630A1 (de) 2023-10-19
CN117177857A (zh) 2023-12-05
US20240208130A1 (en) 2024-06-27

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